000 00331nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aP.Duraipandian & Laxmi Duraipandian, Jeyamala Paramasivam
245 0 _aTrigonometry
250 _a-
260 _a-
260 _b-
260 _c0
650 _aTrigonometry
942 _cBK
999 _c24543
_d24543